crypto: fetch p2pool binary at runtime

services/crypto/xmr-miner/deployment.yaml

@@ -30,11 +30,37 @@ spec:
                 - key: hardware
                   operator: In
                   values: ["rpi4"]
+      initContainers:
+        - name: fetch-p2pool
+          image: alpine:3.20
+          command: ["/bin/sh","-c"]
+          args:
+            - |
+              set -euo pipefail
+              apk add --no-cache curl tar openssl >/dev/null
+              test -n "${P2POOL_URL}"
+              echo "Downloading ${P2POOL_URL}"
+              curl -fsSL "${P2POOL_URL}" -o /tmp/p2pool.tgz
+              if [ -n "${P2POOL_SHA256}" ]; then
+                echo "${P2POOL_SHA256}  /tmp/p2pool.tgz" | sha256sum -c -
+              fi
+              mkdir -p /opt/p2pool
+              tar -xzf /tmp/p2pool.tgz -C /opt/p2pool
+              BIN="$(find /opt/p2pool -maxdepth 1 -type f -name 'p2pool*' | head -n1)"
+              test -n "${BIN}"
+              install -m0755 "${BIN}" /opt/p2pool/p2pool
+          env:
+            - name: P2POOL_URL
+              valueFrom: { configMapKeyRef: { name: xmr-miner-sources, key: P2POOL_URL } }
+            - name: P2POOL_SHA256
+              valueFrom: { configMapKeyRef: { name: xmr-miner-sources, key: P2POOL_SHA256, optional: true } }
+          volumeMounts:
+            - { name: p2pool-bin, mountPath: /opt/p2pool }
       containers:
         - name: monero-p2pool
-          image: registry.bstein.dev/crypto/monero-p2pool:4.9
-          imagePullPolicy: Always
-          command: ["p2pool"]
+          image: debian:bookworm-slim
+          imagePullPolicy: IfNotPresent
+          command: ["/opt/p2pool/p2pool"]
           args:
             - "--host"
             - "monerod.crypto.svc.cluster.local"
@@ -61,3 +87,8 @@ spec:
             tcpSocket: { port: 3333 }
             initialDelaySeconds: 10
             periodSeconds: 10
+          volumeMounts:
+            - { name: p2pool-bin, mountPath: /opt/p2pool }
+      volumes:
+        - name: p2pool-bin
+          emptyDir: {}